Data transmission method for hybrid ARQ type II/III downlink of a wide-band radio communication system

The present invention relates to a data processing method for hybrid automatic repeat for request (hereinafter, referred to as an ARQ) type II/III on a downlink of a wide-band radio communication system; and, more particularly, to a method for processing a radio link control protocol data unit (RLC-PDU) and a HARQ-RLC-Control-PDU, which is extracted from the RLC-PDU, by using a transport channel such as a downlink shared channel (DSCH), wherein the RLC-PDU is used in W-CDMA based on a next generation mobile communication network, such as an international mobile telecommunication (IMT)-2000 and a universal mobile telecommunications system (UMTS), and to a recording media having a computer readable program for carrying out the method. A data processing method for a hybrid ARQ type II/III downlink of a wide-band radio communication system, wherein SRNC and CRNC are located on the same radio network, includes the steps of: a) generating RLC-PDU in a RLC layer of the SRNC and generating a PDU having RLC-PDU information needed for supporting the hybrid ARQ type II/III based on a header of the RLC-PDU (HARQ-RLC-Control-PDU); b) transmitting the RLC-PDU and the HARQ-RLC-Control-PDU to a MAC-D, treating a general user part of a MAC layer through a logical channel; c) transmitting the RLC-PDU and the HARQ-RLC-Control-PDU from the MAC-D to a MAC-C/SH, treating common/shared channel part of the MAC layer; d) transforming the PLC-PDU and the HARQ-RLC-Control-PDU to MAC-PDU and the HARQ-MAC-Control-PDU, respectively, in the MAC-C/SH, and allocating a format TFI1 of the MAC-PDU and TFI2 of the HARQ-MAC-Control-PDU, and transmitting the TFI1 and TFI2 to the MAC-D, and transmitting the MAC-PDU and the HARQ-MAC-Control-PDU to a physical layer of BTS, through a transport channel; and e) forming the TFI1 and the TFI2 in the MAC-D to a TFCI, then transmitting the TFCI to the user equipment through a first physical channel, and transforming the MAC-PDU and the HARQ-MAC-Control-PDU to a radio frame, then transmitting the radio frame to the mobile station through a second physical channel.